Need advice quickly please!! Bridgeport Torque 30 CNC

[DallasShooting]

First off thank for your time.

Ok I have an opportunity to pick up a Bridgeport Torgue 30 for $3000.

The machine is very clean, looks newish on the outside.

One problem though. It will freeze during tool changes on the X axis. I am a newbie, but own a gun business and will learn how to use it. I have a small cnc x2 now I am getting the hang of.

My question is with this problem, what value would you put on it? I guess if I am forced to sell it soon, what could I get for it? Just wanna make sure I have options if I can't run it, or can't get it wired etc.

Thanks Morgan

[jimmy111]

Get it.
For that price you can always change the tools by hand. or set it up as a driling machine.

[machintek]

Probably the spindle drift if off. That is the most common problem when it freezes in a tool change be it can be other things. Do a S0M3. If the actual RPM is 2 RPM or higher, the drift needs adjustment on the spindle drive.
Otherwise, every thing the tool change does has verification. Tool changer forward is verified by a switch, tool release verified by a switch, etc. It might stop due to not seeing a verification switch.
By the way, that is cheap!

George

[jimmy111]

What would you adjust on the drive to adjust the drift?
One of my machines at M3S0 keeps turning. About 15rpm max but sort of hunting.
Would it be a positioning setting or a speed setting?
Thanks

[machintek]

Believe it is CN7 parameter on the spindle drive. I would have to be in front of one to figure it out. You can download a PDF of the drive adjustment procedure at the Yaskawa web site. But usually I have to play with this and parameter 71 spindle gain which is a control software parameter. Going back and forth between the 2 to keep the drift at a minimum and the spindle speed as close as possible to command.

George

[jimmy111]

Believe it is CN7 parameter on the spindle drive. I would have to be in front of one to figure it out. You can download a PDF of the drive adjustment procedure at the Yaskawa web site. But usually I have to play with this and parameter 71 spindle gain which is a control software parameter. Going back and forth between the 2 to keep the drift at a minimum and the spindle speed as close as possible to command.

George

I know about the CN7 parameter and have adjusted it before but didnt know about the #71 spindle gain. Ill check it out.

Edit
Checked it out and there is no #71. Spindle control parameters are in the 3700 series of Parameters. Ill check those out.

[machintek]

The TC-30 had a DX-32 control. The spindle gain is parameter 71. I just played with it and the drift on a siemens spindle drive today.
Sounds like you have a Fanuc control?


George

[jimmy111]

Yes, Fanuc 21iMA
Sorry for the confusion.
But similar problem. As soon as I finish the run Im on I will check out the parameters.

Thanks for the help.

[billsnogo]

Do it! If not, let me know and I would love to get it